Question

State the degree and leading coefficient of each polynomial in one variable. If it is not a polynomial in one variable, explain why.
Need help

1. −6x^6−4x^5+13yx

2. 8x^5 -12x^6+14x^3-9

3. 15x-4x^3+3x^3-5x^4

4. (d + 5)(3d -4)

5. 6x^5 - 5x^4+2x^9-3x^2

Answer 1

$1.\\-6x^6-4x^5+13xy\\degree:6\\it's\ not\ a\ polynominal\ in\ one\ variable\ (13x\boxed{y})\\\\2.\\8x^5-12x^6+14x^4-9\\degree:5\\leading\ coefficient:8\\\\3.\\15x+4x^3+3x^3-5x^4\\degree:4\\leading\ coefficient:-5$

$4.\\(d+5)(3d-4)=3d^2-4d+15d-20\\degree:2\\leading\ coefficient:3\\\\5.\\6x^5-5x^4+2x^9-3x^2\\degree:9\\leading\ coefficient:2$